Render maxSize image tiles for vector repaints
Paint the image in tiled chunks of 256x256 Qrects, this makes it possible to render vector shapes on images bigger than QImage limits BUG:408936
Paint the image in tiled chunks of 256x256 Qrects, this makes it possible to render vector shapes on images bigger than QImage limits BUG:408936
mentioned in commit 5376c52b